Lighting unit



FIG. 1 is an isometric view of a lighting unit, showing a first embodiment of our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is an isometric view of a lighting unit, showing a second embodiment of our new design;

FIG. 8 is a bottom view thereof;

FIG. 9 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 10 is a front view thereof;

FIG. 11 is a back view thereof; and,

FIG. 12 is a top view thereof.

The dot-dash lines in FIGS. 1 and 2 define boundaries of the claimed design and form no part of the claimed design. The other broken lines in the drawings represent portions of the lighting unit which form no part of the claimed design. 

CLAIM The ornamental design for a lighting unit, as shown and described. 